Friday’s release of the penultimate Potter pic is a cinematic retelling of the first half of Harry Potter and the Deathly Hallows. The epic length of the full film, which has been split inyo two parts, allowed director David Yates to stick closer to the way events unfold in the books than he did with Half-Blood Prince.

This should please the more-fastidious Potter fans. Even so, everyone who’s read the books has their own idea of how Harry’s last big adventure went down, and they’re liable to disagree over the ways Deathly Hallows: Part 1 brings the book to the screen.

As Wired.com’s resident Harry Potter addict, I bring you the five things that I think will cause the most fan fights.

Warning: Big, big spoilers ahead.

The relationship between Harry and Hermione gets a little more complicated in Deathly Hallows.

Harry and Hermione Make Out Naked

If you are the sort of person who reads smutty Harry-Hermione fan fiction, a still from this scene is going to be your desktop background for at least the next 12 months. If you’re a parent who unwittingly took a 5-year-old to see the PG-13 Deathly Hallows (and you didn’t walk out after the brutal murder in the first 10 minutes), you can’t say you weren’t warned: This scene is in the book!

Oh, sure, it’s just Voldemort’s Horcrux coming to life and playing on Ron Weasley’s deepest fears and insecurities, but, hey, his loss is our gain. The thing he least wants to see is worth the extra $5 for an Imax ticket.

Harry and Hermione Dance Platonically

This scene, showing Harry and Hermione dancing in a friendly 6th-grade-dance, Christian-side-hug sort of manner to a Nick Cave song, is significantly tamer than what the old friends do in Ron’s nightmares. It’ll still probably infuriate a certain sort of person because — horrors — it’s not in the book!

Heaven forbid a movie use a uniquely visual technique to illustrate the depth of the seven-year friendship between two of its central characters. How dare they take out the scene in Luna Lovegood’s bedroom only to add this!

The Tale of the 3 Brothers

This pivotal bit of magical history is also in the Deathly Hallows book, not to mention in J.K. Rowling’s The Tales of Beedle the Bard. In the movie, it’s told as computer-generated puppet kabuki.

To be honest, it’s pretty cool. I can’t imagine why anyone wouldn’t like it, except some people are probably going to be up in arms that they didn’t cast three more giants of British cinema to appear on-screen for all of two seconds each to play the three Peverell brothers.